It is a beautiful resort area. I went there in 2000 and it was a lovely place. Great accomdations. You can swim, hike, go through the nature reserve, shop, hit the beach, go on guided tours/walks, or just sit in the sun. The people there were very friendly and willling to make my visit a memorable one - always asking if I needed towels, was the room satisfactory, was room service on time, etc. There is also a nearby Water Sports Centre that you can get to. Was there for a week and someday hope to go back.
Here is a link to Trip Advisor. You can read what others said about their stay there.
Natura Beach Hotel - Polis - Natura Beach Hotel Reviews - TripAdvisor
Have fun!